相互作用
Dihydroergotamine intranasal + Phenylephrine
重症度: 重大
Dihydroergotamine intranasal and Phenylephrine: major interaction.
最終更新日
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概要
Phenylephrine is an alpha-1 agonist vasoconstrictor and dihydroergotamine also constricts blood vessels, so combined use can produce marked vasoconstriction and a rise in blood pressure. Peripheral or cerebral ischemia is possible, especially with systemic phenylephrine exposure.
この相互作用をわかりやすく説明すると
Dihydroergotamine intranasal and Phenylephrine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
なぜ起こるのか
Additive pharmacodynamic vasoconstriction through alpha-adrenergic agonism and ergot-mediated serotonergic and adrenergic vascular effects.
対処法
Avoid systemic or repeated use of phenylephrine with dihydroergotamine; choose a non-vasoconstrictor alternative. If unavoidable, monitor blood pressure and watch for ischemic symptoms.
薬剤師に尋ねること
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+会員向け
ページ全体を見る
アカウントを作成してPro+トライアルを始めると、Dihydroergotamine intranasalとPhenylephrineの臨床対応の詳細なアドバイス、追加の注記、エビデンスの詳細、処方全体を対象とした相互作用チェッカーを利用できます。
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
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Phenylephrineのその他の相互作用
よくある質問
Can I take Dihydroergotamine intranasal with Phenylephrine?
MediHelp rates the interaction as major. Dihydroergotamine intranasal and Phenylephrine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Phenylephrine is an alpha-1 agonist vasoconstrictor and dihydroergotamine also constricts blood vessels, so combined use can produce marked vasoconstriction and a rise in blood pressure. Peripheral or cerebral ischemia is possible, especially with systemic phenylephrine exposure.
How serious is the interaction between Dihydroergotamine intranasal and Phenylephrine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid systemic or repeated use of phenylephrine with dihydroergotamine; choose a non-vasoconstrictor alternative. If unavoidable, monitor blood pressure and watch for ischemic symptoms.
What other medicines interact with Phenylephrine?
MediHelp also lists interactions of Phenylephrine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Phenylephrine page.
完全なモノグラフ、用量、相互作用チェッカーはMediHelpアプリで
MediHelpアプリで、完全なリファレンスを開き、複数薬剤の相互作用をチェックし、用量ツールを利用できます。
